City Climb at Edge

City Climb—which is the highest external building climb in the world on the Western Hemisphere's tallest observation deck, Edge—tethers brave thrillseekers to a secure trolly along the outside of the building and open, edged platforms and stairways. Two cables will keep you secure on a path that leads up 32 steps to “The Cliff,” an outlook 1,190 feet in the sky and to “The Stair,” which consists of 151 steps on a 45-degree incline. “The Apex” is where they can lean out and hang over the platform at 1,271 feet. Are your knees buckling yet? Here’s what it was like to climb it. It all finishes with a victory lap on Edge's outdoor viewing area on the 100th floor (and a celebratory medal for inaugural guests).